81340-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81340-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,4 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81340-54:
(7*8)+(6*1)+(5*3)+(4*4)+(3*0)+(2*5)+(1*4)=107
107 % 10 = 7
So 81340-54-7 is a valid CAS Registry Number.
InChI:InChI=1/C33H54O4/c1-5-7-9-11-13-30(34)36-25-19-21-32(3)24(23-25)15-16-26-27-17-18-29(33(27,4)22-20-28(26)32)37-31(35)14-12-10-8-6-2/h23,25-29H,5-22H2,1-4H3/t25-,26-,27-,28-,29-,32-,33-/m0/s1